Spring compressor



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N. SULENTIC SPRING COMPRESSOR Original Filed Oct. 26, 1925 PatentedSept. 7, 1926.

PATENT OFFICE.

NICHOLAS SULENTIC,

OF WATERLOO, IOWA.

SPRING- COMPRESSOR.

Original application filed October 26, 1923, Serial No. 670,810. Dividedand this application led December 3, 1924,

My invention relates to improvements in spring, compressors, and theobject of my improvement is to supply a device having clamping orcompressing elements for compressing springs mounted on valve-stems, inwhich one element is resilientlybifurcated to permit it to be yieldinglyremovably seated about a valve-stem ladjacent a spring to be engaged byit and compressed b-etween it and the opposed clamping element, thefirstmentioned element having its coacting resilient forks shaped withopposed stop members suitable to prevent accidental lateral displacementof the said element when so seated about the valve-stem.

The subject-matter of this application which is intended to disclose theabove improvement is a division of my previous application Serial No.670,810, filed October 26, 1923.

The device of this application is illustrated in the accompanyingdrawings, in which Fig. 1 is an elevation of my said improved springcompressor as in operation holding a coiled spring under compressionupon a valve-stem, to clear and permit the extract-ion of a terminal keyor stop-pin therein, the dotted lines showing the open position of oneof the clamping elements thereof. Fig. 2 is a fragmental upper plan viewof the other clamping element with its pair of resilient members seatedaround the valve-stem and releasably interlocked therewith againstsidewise removal.

The numeral 1 denotes a U-shaped frame made of a flat bar and having onone terminal arm a pair of resilient forks whose flat shanks 20 aresecured to opposite faces thereof by rivets 21. As shown in Fig. 2, theShanks 20 are shaped with concave forks 22, and the forks 22 have in thesame transverse plane like fiat arcuate projections 23, their opposedinner edges concave toward each other to providey a circular openingtherebetween which is slightly larger in diameter than the valve-stein26 to be embraced thereby. rhesc concave inner edges of the parts 23 attheir terminations approach at a less distance than the diameter of thevalve-stem 26, thus providing stops which prevent sidewise displacementsin either of opposite lateral directions of said valve-stem, unlesssufficient manually exerted force is brought to Serial No. 753,713.

spread the forks 22 apart to thus cause them A coiled compression-spring27 is mountedaround said valve-stem and is engaged between saidblockpart 24 and a key or pin 28 inserted through a transverse aperture nearthe opposite end of the stem.

Because of the small clearance afforded in the assembled structures, itis difiicult to extract the pin 28 when it is desired to remove thevalve-head 25 and stem 26, the spring 27 being in the way of the tools,so the device illustrated or any other equivalent thereto may be used toeasily compress the spring while upon the valve-stem so that clearanceis given the extracting tool to operate upon the pin 28.

ln the device illustrated the other terminal member of the U-shapedframe 1 has a boxing 2 secured thereon by rivets 6 or other means, andthis boxing has spaced parts 4 connected by bolts or rivets 5 theinterspace 10 of which has a longitudinal passage to receive a slidablerack-bar 12 with aA pointed terminal 13 opposed to the center of theforks 22. The interspace 1U is widened to receive and seat a smallpinion 9 whose teeth mesh with the teeth of said rackbar 12, and theshaft of said pinion ex teriorly of this boxing has mounted thereon ahandled crank 11 for rotating it, A transverse passage is provided insaid boxing to seat a slide pawl 7 which may terminally engage roots ofteeth on the rack-bar to lock the same in a desired position in th-eboxing. This pawl is limited in movement outwardly bv means of astop-pin fixed in the frame 1.

he boxing has aweb 2 and a terminal clamping part 19 with centering stud18. On the other end of the rack-bar 12 is mounted rigidly by agroovedpart la-.and rivets 15 a clamping-member 16 having a conicalcentering stud 17 opposed to the other centering stud 18. Theclamping-members 16 and 19 are employed to re-compress a spring 27 afterthe latter has been removed from the valve-stem 26 to permit it to bethen taken in any suitable clip device and While under compressionre-mounted on said Vvalve-stem before the pin 28 is reinserted.

As indicated bythe full linesin the drawing at Fig. l, the sprinw. 27 isplaced in compression between the clamping-members 124-13 and 22-23 byrotating the pinion 9 appropriately, when the terminal 13 is engagedwith the center of the valve-head 25 and the resilient forks 22 causedto Vreceive and embrace the rvalve-lstern, with the arcuate flanges 28engaging the spring 27. Any sudden slip cannot dislodge the. fork parts23 from aboutthe stein 26, so that the device thus is keptvconvenient-ly in operative position relative to the valve-stein untilthe pin 28 is removed. l ,Y

Having described my invention, what l claim as new, and desire tosecureby Letters Patent, is

l. A spring compressor, comprising rigid clamping means slidablyconnect-ed 'to be movedl to and from each other, one means containingresilient arms having terminal flat circularly yarcuate transverselyspaced forks which resiliently claspan end part of a coiled springbetween them and have in the saine transverse plan-e opposed flanges tovsaidv seat, a rack reciprocably mounted also in said: seat and in meshwith'said pinion, a

clamping member on one end of said raclg, a rigid U-shaped frame havingone ,end connected to said housing, and having its other end opposed/tothe other end of said rack, and provided with flat spacedspringfurcations, said furca-tions being circularly larcuate to yieldinglyencircle a coiled spring and an axially disposed valve-stein therein,said furcations having arcuate inwardly dis,- posed flanges to closelyencircle the valvestein, and the furcations being adapted to yieldinglyclasp between them the spring while-theflatter is under compression.

In testimony whereof I affix my signature.

Nici-rotas suLnNTio.

